Bird
0
0

What will happen if you forget to close the database session in a FastAPI dependency after yielding it?

medium📝 component behavior Q5 of 15
FastAPI - Database Integration
What will happen if you forget to close the database session in a FastAPI dependency after yielding it?
AThe application will crash immediately
BDatabase connections may remain open, causing resource leaks
CFastAPI automatically closes the session for you
DThe session will close only after server restart
Step-by-Step Solution
Solution:

  1. Step 1: Understand session lifecycle

    Not closing sessions leaves connections open, which wastes resources and can exhaust database limits.

  2. Step 2: Evaluate other options

    FastAPI does not auto-close sessions, app won't crash immediately, and sessions don't close only on restart.

  3. Final Answer:

    Database connections may remain open, causing resource leaks -> Option B

  4. Quick Check:

    Forgetting close = resource leaks [OK]
Quick Trick: Always close sessions to avoid leaks [OK]
Common Mistakes:
MISTAKES
  • Assuming FastAPI auto-closes sessions
  • Expecting immediate crash on leak
  • Thinking sessions close only on restart

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More FastAPI Quizzes
Authentication and Security - Protected routes - Quiz 6medium Authentication and Security - Role-based access control - Quiz 6medium Authentication and Security - OAuth2 password flow - Quiz 1easy Database Integration - Connection pooling - Quiz 6medium Database Integration - Connection pooling - Quiz 1easy Database Integration - SQLAlchemy setup with FastAPI - Quiz 1easy Dependency Injection - Global dependencies - Quiz 3easy Error Handling - Validation error responses - Quiz 1easy Middleware and Hooks - CORS middleware setup - Quiz 13medium Middleware and Hooks - Startup and shutdown events - Quiz 11easy